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BXLJV.U301 - Fire Resistance Ratings -ANSI/UL 263 Page 3 of 4 . , , � CANADIAN GYPSUM COMPANY—Type SHX UNITED STATES GYPSUM CO —Type SHX USG MEXICO S A DE C V —Type SHX 4C. Gypsum Board* — (As an alternate to Items 4,4A or 48-not shown) For Direct Application t Studs Only- For use on one or both sides of the wall as the base layer or one or both sides of the wall as he face layer. Nom 5/8 in.thick lead backed gypsum panels with beveled, square or tapered edges, applie verticaily.Vertical joints centered over studs and staggered min 1 stud cavity on opposite sides of tuds. Wallboard secured to studs with 1-5/8 in. long Type W coarse thread gypsum panel steel screws s aced 8 in. OC at perimeter and in the field when applied as the base layer. When applied as the face layer sc ew length to be increased to 2-1/2 in. Lead batten strips required behind vertical joints of lead backed gypsu wallboard and optional at remaining stud locations. Lead batten strips, 2 in. wide, max 10 ft long ith a max thickness of 0.125 in. placed on the face of studs and attached to the stud with two 1 in. long Typ S-12 pan head steel screws, one at the top of the strip and one at the bottom of the strip. Lead discs or tabs may be used in lieu of or in addition to the lead batten strips or optional at other locations. Max 3/4 in. dia by max 0.125 in. thick lead discs compression fitted or adhered over steel screw heads or max 1/2 in. by 1-1/4 in. by max 0.125 in. thick lead tabs placed on gypsum boards underneath screw locations prior to the installation of the screws. Lead batten strips to have a purity of 99.9% meeting the Federal specifi ation QQ- L-201f,Grede"C". Fasteners for face layer gypsum panels (Items 4,4A or 46) when instailed over lead backed board to be min 2-1/2 in.Type 5-12 bugle head steel screws spaced as described in Item . RAY-BAR ENGINEERING CORP —Type RB-LBG. 5. Molded Plastic* — Not shown,Optional — Solid vinyl siding mechanically secured over the out r layer to framing members in accordance with manufacturer's recommended installation details. ALSIDE,DIV OF ASSOCIATED MATERIALS INC GENTEK BUILDING PRODUCTS LTD HEARTLAND BUILDING PRODUCTS INC VYTEC CORP NEBRASKA PLASTICSINC 6. Steel Framing Members— (Optional, Not Shown)* - Furring channels and resilient sound isol tion clip as described below: A. Furring Channels— Formed of No. 25 MSG galv steel. 2-3/8 in. wide by 7/8 i . deep, spaced 24 in. OC perpendicuiar to studs. Channels secured to studs as described in Item b. Ends of adjoining channels are overlapped 6 in. and tied together with double strand of No. 18 SWG galv steel wire near each end of overla . As an alternate, ends of adjoining channels may be overlapped 6 in. and secured together with two self-tapping #6 framing screws, min. 7/16 in. long at the midpoi t of the overlap, with one screw on each flange of the channel. Wallboard attached t furring channels as described in Item 4. B. Steel Framing Members* — Resilient sound isolation clip used to attach furrin channels (Item 6a)to studs. Clips spaced 48 in. OC., and secured to studs with No 8 x 2-1/2 in. coarse drywall screw through the center grommet. Furring channels ar friction fitted into clips. PAC INTERNATIONAL INC—Type RSIC-1. *Bearing the UL Classification Mark http:Udatabase.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/showpage.html?name= . 1/18/2007